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For those who don't know, the Tendo is a device which you can use to measure the peak/avg. velocity of your lifts. I've always wanted one, but at $1600 (http://store.sorinex.com/Tendo-Weightlifting-Analyzer-p/t-2.htm) it was way out of my price range.
(0.0625 Hz, 10.0 cm, 16 s, 0.393 rad/s) (4) When a body of unknown mass is attached to an ideal spring with fo rce constant 120 N/m, it is found to vibrate with a frequency of 6.00 Hz. Find (a) the period of the moti on; (b) the angular frequency; (c) the mass of the body.t t = 0 its position and velocity components are +1.1 cm and -15 cm/s, respect ively. (a) Find the acceleration component of the needle at t = 0. (b) Write equations giving the position, velocity, and acceleration components of the point as a function of time.